Paper-marking machine.



H. BROWN.

PAPER MARKING MACHINE.

Arrucmon man :uns 2o. 1913.

Patented Apr. 9, 1918.

entre,

VHOVTABJ) BROWN, 0F MITTINEAGUE, HASSCHUSETTS.r4

@HEB-MARKING MACHINE.

assignee.

speemeeaon of Lettere antena' Patenten apa e, raie,

Application iled June 20, 1913. Serial Hc. 774,@60.

, To aZZ 'whom z't ma concern Be it known t at I, HOWARD BRowNna citizen of the United States, residing 1n Mittineague, in the county of Hampden and State of Massachusetts, have invented new and vuseful improvements in Paper-Marking Machines, of which the following 1s a speciication.

The object of the present invention is-to provide a machine constructed for use 1n impressing on a moving paper sheet, a mark serviceable in lace of a water-mark, to identify the origin of the paper or as an advertisirma medium, the machine being so constructed as to insure uniformity in the character of the mark, irrespective of changes in the weight of the paper to which the mark is being applied, provlsion being made for adjusting parts of `the machine to increase or decrease the impressing pressure and to otherwise adjust the working elements ,of the device. The machine is serviceabie for use-in connection with a paper making machine, such as a Fourdrinier machine and can be employed for impressing on the webof paper as it passesthrough the paper making machine, a sharp and clear cut imprint much liner in detail thanthe ordinary water mark made with a dandy roll and lider-ing in appearance and in character from such marks as can be impressed with rubber type or the like. ln general the paper marking device is positioned to operate on the moving aper web or sheet after the web has been fu formed and while it is traveling between tile couch rolls and the calenders of the paper making machine. For instance the water marking device may be placed immediately after the rst drying drum, so'that the fullyy formed web after having its moisture squeezed out at the press rolls and after being partially dried at the rst drying drum, but while still moist and plastic, may be so tightly compressed between a suitable rotating rigid impression face and a coperating smooth roll, that it will take up the sharp outlines of the plate and retain them while the paper is passing around succeeding drying drums, with the result that the mark is permanently xed or set in the paper web and remains as ,A a permanent mark in the finished product. it is not strictly speaking, a water-mark, be-

di'erent 'in appearance .and far more beautiful kand with sharp clear cnt detail, if desired,

The machine of the present invention may be used 1n accordance with the process dist closed in my co-pending application, Serial No. 774,380, tiled June 18, 1913, and the im-v provements herein claimed are of distinct advantage in securing an accurate adjustment of the top or plate bearing roll with respect to the moving web of paper under treatment.

In the accompanying drawings forming a paBrLt of this speciication,

bodiment of the present invention, and

Fig. 2 is an end elevation of the same, certain parts being broken away. t

In the embodiment illustrated, the machlne comprises standards l and 2 suitable for mountmg in connection with a paper making machine, such as a Fourdrinier machine, as for instance by attachment to the side frames of the drier drums, so that the device as a whole will be positioned somewhat above the drier drums and preferably in position to receive the web 3 of paper coming from the first drier drum. rThis web of paper is still moist and somewhat plas-- tic, but the Iibers are matted together and not easily rdisplaced and the operation of the machine on the paper consists largely in compressing the fibers along certain predetermined lines and bands, as laid out on theimpression plate, but without breaking its ibers and without displacing them or tearin them apart. in this respect therefore, t e machine operates differently from ordinary watermarking devices using dandy rolls and the like. and 2 is slotted to form a guide-way wherein are received the bearing blocks for the two rolls or cylinders 4 and 5 used in the machine. The. bearings for the lower roll 5 comprise a pair of blocks 6 seated im` movably on shoulders near the bottom of the slots and shaped toreceive the trunnions of the roll. Above each block 6 is an auxiliary block 7 seated on block 6 and serving as the base on ,which other portions of the 4structure are mounted and with respect to which those other portions may be moved up or down t'o adjust the e'ective distance between rolls 4 and 5 and consequently the effectivel pressure on the paper being marked. Each block 7 is recessed, to receive the end of a screw-threaded stud 8, whereon is keyed a gear 9 seated at all times directly in contact with the top face of block 7 and gure l is a perspective view of one em- Each of the standards l i meshing with worm 1@ carried on a sha't 11,' provided with a capstan 12 .or other adjusting means so that by rotating shaft 11 and the gears, 'the stud 8 may be rotated.

The top roll bearing 13 is mounted. to slide freely betr/veen the sides of the supporting standards and overlaps the edges oi" those standards lll to insure proper alinem'ent. This bloelr 13 rests on an auxiliary bloclr 1o recessed with a threaded hole to receive the upper threaded end 16 ont stud 8, so that when the stud turns, the bloclrs 15 will be raised or lowered. Secured to each bearing 13, but iiree to turn with respect thereto is a threaded shaft 1'?, which passes through the top detachable cross bar 18 of the standard and is in threaded engagement with a hand wheel 19 and has upper end provided with a slotted bloclr 20 izor reception ot a lever 21 pivoted to a'support 22 carried at one end ot the cross member 18. in adjustable weight 23 is movable outward along the 21 to vary the pressure with which shaft 1'? bears down on the roller bearing 18 to hold the' top roller l to its worlr onithe sheet ot paper. wWith the rolls at work the hand wheel 19' may be out ot Contact with plate 18, but to litt the roll fr high above the sheet of paper, this hand wheel may be turned, and through its threaded engagement with shaft 17 will litt bearing block 13 away trom bloclr 15 and in so doing will litt roller l wholly out of contact with the paper..

The impression plates heretofore referred to as being carried by the top roll l may be electrotypes or other rigid plates 2e oi stereotype character and may be very complea in design with elaborate detail, mounting them to roller d they may be fastened on with screws, but are preferably spaced -from the roller with a thin layer ot slightly yielding material, such for instance as a single4 layer ot paper 25.

Rollers l and 5 are preferably geared together to rotate in unison and may be driven 1n any suitable manner, as by geared connection with the drier drums of the paper making machine, the speed 0;? rotation being of course adjusted to correspond exactly with that of the lineal speed oli the web of paper 3. With the web ot paper continuously running through'the machine as it must be' when the paper making machine is working, the top cylinder or roll d may 1oei-lifted out with an overhead crane and new or diierent electrotypes Q4 may be substituted and the roll again returned to working position without interrupting the passage oi" the paper web over the lower roll 5 and by suitably adjusting the hand wheels 19, the topv roll may be cautiously lowered into working position and then allowed to rfloat on the paper under the pressure e2'- erted by own weight and that incident to the adjustable weights 23. 'Howler/fer, there is all times, a limit to the possible downward movement ot roll l and its electrotypes and that limit is established bj] blocks 15, the elevation of which` is controlled by the studs 8 and their worm gears. By shitting the worm gears, the limit to the downward movement ot the roll carrying the electrotypes may be varied to suit the 'thickness ot the paper passing vthrough any particular time.4 lt is therefore not necessary to litt out the roll and shim up the electrotypes when a change is made in the run o1@ paper for an analogous adjustment can be made by means ot the worm gears while the machine is at work. End rings 2Limay be provided it desired, so that under no circumstances can the top roll sink 'ar enough to endanger the electrotypes through striking too hard'against the lower roll, because ot improper setting of the worm gears. y

.ln out the method ont marking paper here contemplated, and set `forth more at length in. the companion application above referred to, the perfection ot the marit depends to some extent on a nice adjustment of the pressure at which the impression is made and by the special arrangement herein disclosed and claimed that exact adjustment is obtained in a facile and economical and adjustments to change the intensity or? impression can be made instantly.

Changesin detail may be made 1n the apparatus here disclosed without departing trom the spirit of my invention as deiined by the appended claims.

1. ln a machine for impressing and marliing on a continuous web of paper while in a damp and plastic condition the combination ot a pair ot standards, bearings therein, rolls supported by said bearings, rigid impression plates carried byv one of said rolls, stops limiting the downward movements of the uppermost of said rolls, said stops being independentv from and spaced above the lowermost bearings, and means positioned below saidstops for adjusting the same to vary the edective distance between the rolls,

the upper roll being liftable without adocting either the adjusting means or the position oli the stops. c

2. ln a machine of the character disclosed, the combination of a pair of supporting standards, bearings therein, a pair of rollers mounted in said bearings and between which a web of moist plastic paper may be passed continuously, rigid impression plates secured to thetopmost roll, yielding means for holding said impression plates to their work on the web of paper as it passes between said rolls, stops spaced from the lowermost bearings and limitin the 'downward movement of the upper roll, and means for adjusting the vertical position of said stops whereby to determine the minimum distance between said rollswhile in action 'and marking a moving web of paper, said means lcomprising a vertical post threaded into the bottom of said stop and provided with means for rotating said post.

3. ln a machine for impressing a mark on a continuous web of paper while in a damp and plastic condition, the combination of a pair of standards, bearings therein, rolls supported by said bearings, rigid impression plates carried byone of said rolls, yielding means for holding said impression plates under regulable pressure to their work on the'web of pap\er, means for raising the top rolls while in action and marking a movingl web of paper. f

In witness whereof, l hereunto subscribe my name to this specification in the presence of two witnesses.

. ,HowAnn BROWN.

i Witnesses: A I W.` H. HAsKINs, C.y A. EDGERTON. 

